At that time, the bodhisattva Vidhi­vatpari­pṛcchaka questioned the bodhisattva Gam­bhīrārtha­saṃdhi­nirmo­cana on the ultimate whose defining characteristic is inexpressible and nondual: “O son of the Victorious One, when it is said that all phenomena are nondual, what are these phenomena? In what way are they nondual?”

Gam­bhīrārtha­saṃdhi­nirmo­cana replied, “Noble son, all phenomena, what we refer to as all phenomena, are of just two kinds: conditioned and unconditioned. With respect to these, the conditioned is neither conditioned nor unconditioned. The unconditioned is neither unconditioned nor conditioned.”

Vidhi­vatpari­pṛcchaka inquired, “O son of the Victorious One, why is the conditioned neither conditioned nor unconditioned and the unconditioned neither unconditioned nor conditioned?”

Gam­bhīrārtha­saṃdhi­nirmo­cana answered, “Noble son, the term conditioned is a word, a label used by the Teacher. Words that are labels used by the Teacher are conventional expressions arising from imagination. These conventional expressions arising from imagination are always unreal conventional expressions arising from imagination in its diversity. Therefore, the term conditioned is not the conditioned. Noble son, the term unconditioned is also included within conventions, just as expressions other than conditioned and unconditioned are and will [always] be. One might object that there is, however, no expression in the absence of the object [to which it refers]. What is then this object? It is the complete and perfect awakening to inexpressible [reality] through the sublime gnosis and vision of the noble ones. But in order to lead [others] to the perfect realization of this very inexpressible nature of phenomena, the Teacher labels this object with the term conditioned.

“Noble son, the term unconditioned is also a word, a label used by the Teacher. Words that are labels used by the Teacher are conventional expressions arising from imagination. These conventional expressions arising from imagination are always conventional expressions deprived of any actuality that arise from imagination in its diversity. Therefore, the term unconditioned is not the unconditioned. Noble son, the term conditioned is also included within conventions, just as expressions other than conditioned and unconditioned are and will [always] be. One might object that there is, however, no expression in the absence of the object [to which it refers]. What is then this object? It is the complete and perfect awakening to inexpressible [reality] through the sublime gnosis and vision of the noble ones. But in order to lead [others] to the perfect realization of this very inexpressible nature of phenomena, the Teacher labels this object with the term unconditioned.”

Vidhi­vatpari­pṛcchaka asked, “O son of the Victorious One, as the noble ones completely and perfectly awaken to inexpressible [reality] through their sublime gnosis and perception, why do they label this object with the terms conditioned and unconditioned in order to lead [others] to the perfect realization of this very inexpressible nature of phenomena?”

Gam­bhīrārtha­saṃdhi­nirmo­cana replied, “Noble son, it is like the following example: A magician or his skillful apprentice, finding himself at the juncture of four great roads, assembles grass, leaves, twigs, pebbles, or stones and produces all kinds of magic illusions, such as regiments of elephants, horses, chariots, and soldiers or collections of jewels, pearls, beryl, seashells, crystal, and coral, as well as an abundance of wealth and grain in treasuries and granaries. At that time, in the presence of these illusions, those who are naive, slow-witted, or confused, not perceiving the grass, leaves, twigs, pebbles, or stones, see and hear those magical tricks and think that whatever appears exists—that these regiments of elephants, horses, chariots, and soldiers or collections of jewels, pearls, beryl, seashells, crystal, and coral, as well as this abundance of wealth and grain, treasuries and granaries, exist. Clinging to these magical illusions according to the way they see and hear things and strongly believing in them, they express themselves through conventions, such as ‘This one is true but the other is false.’ They still need to examine these illusions.

“Those who are not naive or confused but have wisdom perceive the grass, leaves, twigs, pebbles, or stones. They see and hear those magical tricks and understand that whatever appears does not exist—that these regiments of elephants, horses, chariots, and soldiers or collections of jewels, pearls, beryl, seashells, crystal, and coral, as well as this abundance of wealth and grain, treasuries and granaries, do not exist. Yet, they understand that the conception of an elephant regiment exists since its manifestation as a conception through an expedient exists, as do the manifestations as conceptions of regiments of horses, chariots, and soldiers or collections of jewels, pearls, beryl, seashells, crystal, and coral, as well as this abundance of wealth and grain, treasuries and granaries, together with other similar manifestations. So they understand that all those magical illusions, these magic illusions deceiving the eye, exist [in the way magical illusions do]. Thinking in this way, [these wise beings] do not express themselves through conventions, such as ‘This one is true but the other is false,’ on account of clinging to these magical illusions in the way they see and hear things and thus strongly believing in them. However, they do express themselves through conventions in order to convey the true nature [of these illusions to others], although they do not need to further examine these illusions.

Likewise, some childish or ordinary beings have not attained the transcendent sublime wisdom. They have not understood that the nature of all phenomena is inexpressible. When those beings perceive conditioned and unconditioned phenomena, they believe that whatever appears as a conditioned or unconditioned phenomenon exists, and they express themselves through conventions, such as ‘This one is true but the other is false,’ on account of clinging to these appearances according to the way they see and hear things and thus strongly believing in them. They still need to examine these appearances.

“With regard to this, some beings who are not childish and have seen the truth have attained the transcendent sublime wisdom. They have understood that the nature of all phenomena is inexpressible. When they perceive conditioned and unconditioned phenomena, they believe that whatever appears as a conditioned or unconditioned phenomenon does not exist. However, with respect to these appearances, they think that the conceptions in terms of conditioned and unconditioned, the manifestation of conceptions through an expedient in terms of conditioned and unconditioned, the occurrence of conceptualization, and the phenomenal appearance of conditioned phenomena exist in the way magical illusions do. That which deludes the mind exists [in the way magical illusions do]. Thinking in that way, they do not express themselves through conventions, such as ‘This one is true but the other is false,’ on account of clinging to these appearances according to the way they see and hear things and thus strongly believing in them. However, they do express themselves through conventions in order to convey the true nature [of these appearances to others], although they do not need to further examine these appearances.

“Noble son, the noble ones are thus completely and perfectly awakened to inexpressible [reality] through their sublime gnosis and vision of this object, but in order to lead [others] to the perfect realization of this very inexpressible nature of phenomena, they label this object with the terms conditioned and unconditioned.”

At that time, the bodhisattva Gam­bhīrārtha­saṃdhi­nirmo­cana recited these verses:

“The profound, which is inaccessible to foolish beings, Inexpressible and nondual, has been taught by the Victorious One. Yet, fools deluded by ignorance Take delight in mental elaborations and dwell on duality.

“Deprived of understanding, afflicted by misunderstanding, They will be reborn as sheep or oxen. Casting aside the words of the wise, They will wander in saṃsāra for a great length of time.”